import java.util.Arrays;


public class Matrix {
  int[][] data;
  public Matrix(int[][] data) {
    this.data = data;
  }
  @Override
  public String toString() {
    return Arrays.deepToString(data);
  }
  public int[][] getSSSS() {
    return data;
  }
  public int[][] add(int[][] other) {
    return null;
  }
  public int[][] subtrack(int[][] other) {
    return null;
  }
  public int[][] multiply(int[][] other) {
    return null;
  }
}
